32LD540, 32LD540, 32LD541, 32LD570, 32LD575 (CHASSIS:LD01B) - LG TV Service Manual (repair manual). Page 14

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4.  V-COM Adjust(Only LGD Module) 
 
a)  Why need Vcom adjustment? 
 The Vcom (Common Voltage) is a Reference Voltage of Liquid Crystal Driving. 
 Liquid Crystal need for Polarity Change with every frame. 
 
b)  Adjust sequence 
 You should change the panel size by going to the Factory Mode, press “Menu”, “1”, “2”, “4”, 7”   
and “5” keys on a remote. 
 You have to select “Miscellaneous” in Factory mode. 
 Enter “ V-Com” by pushing “OK” key. 
 
 
 
 As pushing the right or the left key on the remote control, and find the V-COM value which is no   
or minimized the Flicker.   
(If there is no flicker at default value, Press the exit key and finish the VCOM adjustment.) 
 
 
 
[LED/LCD Panel VCOM SPEC .] 
 
 
                      ■ Push the “OK” key to store value. Then the message “Saving OK” is pop. 
 
 
 
 
 
 
 
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